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參數(shù)資料
| 型號： | MH89770 |
| 廠商： | Mitel Networks Corporation |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| 中文描述： | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| 文件頁數(shù)： | 1/36頁 |
| 文件大?。?/td> | 836K |
| 代理商： | MH89770 |
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4-125
Features
Complete interface to a bidirectional T1 link
D3/D4 or ESF framing and SLC-96 compatible
Two frame elastic buffer with jitter tolerance
improved to 156UI
Insertion and detection of A, B, C, D bits
Signalling freeze, optional debounce
Selectable B8ZS, jammed bit (ZCS) or no zero
code suppression
Yellow and blue alarm signal capabilities
Bipolar violation count, F
T
error count, CRC
error count
Frame and superframe sync. signals, Tx and Rx
Per channel, overall, and remote loop around
8 kHz synchronization output
Digital phase detector between T1 line and
ST-BUS
ST-BUS compatible
Pin compatible with the MH89760BN/BS
Inductorless clock recovery
Loss of Signal (LOS) indication
Available in standard, narrow and surface
mount formats
Applications
DS1/ESF digital trunk interfaces
Computer to PBX interfaces (DMI and CPI)
High speed computer to computer data links
Description
The MH89770 is a complete T1 interface solution,
meeting the Extended Super Frame (ESF), D3/D4
and SLC-96 formats. The MH89770 interfaces to the
DS1 1.544 Mbit/sec digital trunk and has the
capability of meeting ACCUNET
1
T1.5 wander
tolerance (138 UI).
The MH89770 is a pin-compatible enhancement of
the MH89760B.
1. ACCUNET
T1.5 is a registered trademark of AT & T.
Figure 1 - Functional Block Diagram
TxSF
C2i
F0i
RxSF
DSTo
DSTi
CSTi0
CSTi1
CSTo
VDD
XCtl
XSt
C1.5i
RxFDLClk
RxFDL
TxFDLClk
TxFDL
OUTA
OUTB
RxA
RxT
LOS
RxR
RxB
E1.5o
E8Ko
VSS
ST-BUS
Timing
Circuitry
Data
Interface
Serial
Control
Interface
Control
Logic
Two Frame
Elastic
Buffer with
Slip Control
2048 - 1544
Converter
ABCD
Signalling RAM
DS1
LINK
INTERFACE
Phase
Detector
DS1
Counter
Clock
Extractor
Receiver
Transmitter
ISSUE 2
March 1995
Ordering Information
MH89770N
MH89770S
40 Pin DIL Hybrid 0.8" row pitch
40 Pin Surface Mount Hybrid
0
°
C to 70
°
C
MH89770
T1/ESF Framer & Interface
Preliminary Information
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MH89770S | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| MH89790B | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| MH89790BN | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| MH89790BS | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| MH89791 | CEPT PCM 30 Transmit Equalizer Advance Information |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MH89770N | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:T1/ESF Framer & Interface Preliminary Information |
| MH89770S | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:T1/ESF Framer & Interface Preliminary Information |
| MH89790B | 制造商:MITEL 功能描述: 制造商:ZARLNK 功能描述: |
| MH89790BN | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ST-BUS⑩ FAMILY CEPT PCM 30/CRC-4 Framer & Interface Preliminary Information |
| MH89790BS | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ST-BUS⑩ FAMILY CEPT PCM 30/CRC-4 Framer & Interface Preliminary Information |
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